Hi this is my first post. I have been using Duolingo regularly for about 6 months and have reached level 16 in Spainish. Recently a fluency image popped up. Though I've continued to practice, all it does is switch from 49% to 50% and never gets high or lower. So my two questions are "How does fluency work," and "How can I raise my fluency?".
Forget about the fluency image. It is completely wrong. When you can understand the language and speak the language so natives can understand you, you will have achieved fluency.
The fluency badge is an experiment they're running. So far it seems to be met with a fair bit of confusion and indifference, but I'm curious to see what will come of it.